Physical Unclonable Functions via Capillarity-Assisted Particle Assembly
발표자
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초록
내용
Counterfeit cause significant global economic damage. To tackle this, robust strategies for product authentication have been pursued. Physically unclonable functions (PUFs) offer a solution, providing unique identification tokens that cannot be replicated. They rely on microstructures with inherent randomness, preventing reproduction. Although various methods like fluorescent silk microparticles and carbon nanotubes are used to create physical unclonable functions, they are often enabled by means of alignment markers, which nonetheless always introduce a certain degree of mismatch between the original patterns and subsequent read-outs. This work introduces a pixelated system of distinguishable micro-tokens using fluorescent colloids and capillarity-assisted particle assembly. The resulting square array pattern defines the full tokens without requiring alignment, ensuring a zero false positive rate. Randomness and scalability of encoding capacity for PUF are analyzed statistically.